Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

i really don't know how to cite parts of discoverlife properly: some sections show the authors, some don't; some are very good or at least helpful, others are quite unreliable...

Just add like so:
Internet References
Discover Life – species page w/ images (1)

Then add cite for each reference. If you would edit to read "Discover Life," it would work for all. Thank you.